The party is enlisted to assist the Righteous Host, an army formed as a last resort to defend the world against the monsters of Elemental Evil. The host is greatly outnumbered. Its leaders send the party on a series of missions, each of which will give the Righteous Host an edge in the great battle to come. This epic adventure ends with the final push against the forces of Elemental Evil in the Meadows, and the outcome is informed by how effective the party is in their missions... and whether they are willing to risk putting themselves in the front lines. If the Righteous Host loses, players may decide to travel to Hommlet or other nearby towns to defend them. Whether the host is successful or not, players can decide to follow many different plot threads: exploring the Temple of Elemental Evil, finding the lich Kell the Eldest's lair and destroying his phylactory, or following the will of Bitbaern's Shield and discovering historical sites that were previously lost. Pgs. 44-69

Many centuries ago, the dwarven kingdom of Sarphil stretched out across the Galena Mountains east of the Moonsea. They dug for the precious metals hidden beneath the rocky terrain, and they established numerous cities and settlements to aid in their excavation and manufacturing efforts. This was during the early days of Myth Drannor, the elven kingdom in the forest of Cormanthor, and the dwarves and elves initially clashed as each sought resources and expanded their territories. Myth Drannor and Sarphil eventually settled their differences, and many dwarves moved into the elven city to offer their services and expand their knowledge. In the Galena Mountains, Sarphil continued to flourish. Unfortunately, these days of prosperity did not last long. The last great king of Sarphil was lost in the dwarven city of Mount Throndor, beneath the mountain peak of the same name, and Sarphil withered under bitter clan disputes since no single family could claim legitimate lineage over the fragmented kingdom. What happened under Mount Throndor has been a mystery for thousands of years. Many attempts have been made to reclaim the lost riches and legacy of the last Sarphilan king, but powerful wards have prevented intrusion under the mountain, wards erected by the dwarves of Sarphil. Were the wards built to keep outsiders from intruding – or to keep something inside from escaping? An enterprising dwarven leader wants to find out, but she is going to need some help from a band of heroes. Horrors of Mount Throndor is a Dungeons & Dragons adventure of exploration, darkness, and terror featuring a lost dwarven city overrun by forces from the Far Realm and the journey to cleanse it once and for all. The adventure is designed for a group of 11th-level characters, and successful completion of the adventure should put the characters at 16th level. Here There Be Monsters Mount Throndor has become infested with madness from the Far Realm. During their journey to penetrate the ward and through the city itself, the characters are going to face gibbering horrors, unpredictable slaadi, fanatic stone giant cultists, degenerate star spawn horrors, mutant derro, undead dwarves, and countless golems. The ancient breweries of Mount Throndor have produced alementals who slither in the darkness, and a great dwarven war juggernaut named Big Hans stomps through the city. Legendary Villains and Epic Moments Though it has been sealed, Mount Throndor is not empty. The characters have opportunities to meet, interact with, and (likely at least) combat against powerful foes within the legendary dwarf city. A dwarf lich, a Far Realm spider goddess, an iron-encased demilich, and a melted flesh derro warlock monstrosity all await, along with a mind-bending force - Great Cthulhu! The characters have a chance to face an avatar of Great Cthulhu in the dwarven depths in the final confrontation of the adventure to free Mount Throndor and rid Faerun of a Far Realm invasion! An Adventure of Exploration Mount Throndor is a big, sprawling complex, a dwarven city with two major strongholds, a bridge system spanning a massive underground lake, and a deep mining complex. The scale is difficult to grasp and convey. Previous examples of adventures featuring these elements have included maps - usually lots of them, great spawling maps connected at ends to make huge subterranean dungeons. It is the classic image of a D&D dungeon crawl, and the map is a key component to its visualization. However, in this adventure, the maps are handled differently. There are certain areas, ususally outside the dwarven city itself, that include maps that are suitable for use at the game table, either in theater of the mind style or grid-and-miniatures. Mount Throndor itself is presented with an abstract map, and exploring it utilizes the exploration procedure outlined in Appendix A. Characters traverse the huge subterranean system using this abstract system, and during their travels they are going to run into random encounters and sites with more interesting and complex encounters.

A strange breed, indeed. No one returns from Revular's Island, and for good reason. The story starts in a fantasy kingdom called Lungardy, but the DM may choose any setting that borders a large body of water. Pgs. 30-45

The entity known as Oreiax is a gruesome, stunted monstrosity born of ancient death. Rescued from an eternity of petrification by Doresain the Ghoul King, Oreiax immediately pledged itself to the Ghoul King's service, and thus indirectly, into Orcus's service. Oreiax, born of stone and death, seeks to glorify Doresain by petrifying the world. Pgs. 112-119

Adventure in a desolate magic-stained wasteland where fabulous crystal spires and fortresses plummet from the skies to tempt the desperate and the bold with magical gems and golden treasures. Find your fortune or find your death as you plunder the fallen sky tomb of an Empyrean despot. SCHEME with the unnatural denizens of the Crystal Tomb! UNRAVEL the secrets of the Dead King and his realm of misrule! LOOT strange magics and Opulent Treasures from beyond the sky's vault! A complete adventure for Level 1 characters and an introduction to both the dungeon crawl style play and the Crystal Frontier setting. Written with the new referee and players unfamiliar with older style games in mind, Tomb Robbers of the Crystal Frontier is built to start a campaign, use as a one-shot, or to drop in as an adventure locale in almost any fantasy world. The adventure has been designed for and tested with OSE, but is easy to use with any of the wayward offspring of the early editions of the first fantasy roleplaying game. Tomb Robbers of the Crystal Frontier emphasizes problem solving, faction intrigue, and exploration in the tradition of classic dungeon crawl adventures, but with a phantasmagoric fantasy Western aesthetic. NOW AVAILABLE FOR ERRANT AND OLD SCHOOL ESSENTIALS!

The Thrice-Damned House of Thrune wants to seal the Inferno Gate, an uncontrolled portal to Hell, and the villainous adventurers are called to accomplish the task. To acquire the components and perform the ritual, they must first face down a hellspawn thieves' guild, the Hellknight Order of the Pike, and the knights of the Glorious Reclamation and their celestial allies. But before they can complete the ritual, the characters may be forced to examine their options—is closing the gate the best plan for the future? Will the villains obey their orders to close the gate to Hell—or might they make a deal with a devil for control of the portal? Or will they only become the latest in a long line of sacrifices to the Inferno Gate?

Your foe seeks to unlock the Iron Door beneath the Peaks of Flame and open the way for the Eater of the World. You must find your way through the maze of tunnels and stop them, or it will be the end of all things. Part Four of the Broken Chains Series.

In your many adventures since ridding the world of Sukits the Butcher you have heard whisperings of his boss in the area. The name Bromide the Wicked has been passed around as a greater threat to the freedom in the area as he is the slaver boss. The Plainsmen have given your party the general direction of this evil man and ask for your help in the matter. Is your party ready to deal with the slaver issue and take down the network of traffickers?

The water pounds the base of the cliff with the relentless power of time. Jagged rocks appearing and disappearing in the foam of the sea like gnashing teeth. Above it all on the top of the black cliff sits a small house and the dark light tower. The magistrate has sent your party to investigate why the light has gone dark.

A hobgoblin force is expanding and threatening the land. Confronted with the relentless advance of Azarr Kul’s horde, the characters must undertake vital missions to influence the outcome of the war. Can they shatter the armies of the enemy, or will Azarr Kul’s dreams rain destruction upon the human lands? The adventure is fast-paced and time-sensitive, and requires almost constant movement by the party. WoTC 95385

Yesterday, young Tobias went to investigate an old tomb by himself. Everyone told him it was a bad idea. Everyone was right. Today, you and your companions awaken to a town in chaos. Why is the temple sealed behind a divine shield? Why are children and worshippers trapped within? How do we get inside? What did Tobias do?! Ragged Hollow is a full-service starting town, full of classic creatures and challenges all updated and brought together for newbies and nostalgia-lovers alike. There are goblins and witches in the woods, a house full of traps, a basement of vermin, kobolds in a cave, bandits on the road, riddling ravens, a 50-room temple dungeon, nursery-rhyme monsters, living nightmares, Lovecraftian horrors, and tons of unique items to find. This is a mystery with lots of relevant side-quests around the town. The heroes can investigate the situation, get into the temple, save the innocents, and stop the monsters. And get some loot! ADVENTURE TYPE: Medium Dungeon / Town / Wilderness Adventure DESIGN NOTES This adventure is intended for characters levels 1 to 4. It includes several wilderness areas (forest, hills, mountain), a bustling town, several local mini-dungeons, and one 50-room temple dungeon. Each area contains various encounters and unique items. There are many opportunities for combat, but it is possible for players to explore most areas and complete many interactions without any combat at all, depending on their choices. INCLUDES: Story hooks, dialogue prompts, random encounters, stat blocks, original creatures and treasures, and maps. KEYWORDS: town, village, forest, goblins, goblin market, witches, hags, hills, bandits, ogres, mountain, kobolds, caves, dwarves, temple, clerics, nightmares, demons, riddles, traps, ghosts, fairy tales, Lovecraft, mutant

Years ago a Gnome female named Carlota retired from adventuring and built a small tower not far from Dano’s Point. While the illusionist/tinker kept to herself her home was reputed to have a cache of magical items from years on the trail. It has been several years since anyone has seen the diminutive woman and she is believed to be deceased. As you begin your adventuring career you decide that a trip to the tower is in order. If Carlota is alive, perhaps she can give you advice, if she isn’t perhaps you can help yourselves to some of her items.

No-one knows why, but many of the villagers of Greenmist have been going insane. Not only that, but something has caused the surrounding environment to transform into fetid swamps. Heroes from far and wide have gone into the swamps to destroy the source of the madness, but none have returned. The truth is that the psychic whispers of an aboleth have invaded the minds of Greenmist's people. The creature called Seedooloo has been using forbidden magic, mad science, and the strange ability of his kuo-toan worshipers to grant himself the power to drive the surface world to insanity. The Call of Seedooloo includes monsters found in Mordenkainen's Tome of Foes.

The Hag's Hexes is a 66 page guide designed by Dungeon Masters Guild luminaries like JVC Parry and Janek Sielicki alongside rising stars and old stalwarts like Matt Butler, Matthew Gravelyn, and Tim Bannock. It was created with one thing in mind: to make hags more than the sum of their (often meager) Challenge ratings, giving them the mechanics, roleplay potential, and weird magic that can inspire campaigns, lay low kings and warlords, and potentially ensnare unwary Player Characters into campaign-changing curses or long-term bargains that force them into terrible moral quandaries! Split into five chapters, the authors have provided everything a DM needs to terrify their players for years to come. The Bestiary features over a dozen monsters; some are new hags, some are their minions or even their mobile lairs, and one of them -- the Shaitan AKA Desert Hag -- was featured in Monsters of the Guild! Bargains & Curses is a chapter filled with ideas that can kick-start campaigns, threaten valued NPCs, or put Player Characters' very existence and morality at stake. Chapter 3 includes two dozen items of wonderment, weirdness, and dread, ranging from fairy tale-inspired items of whimsy to terribly cursed items of horror. Chapter 4 is titled "Filthy, Vile & Downright Dirty" and provides dozens of roleplaying tips to make hags come alive, new mechanics inspired by and expanding on Volo's Guide to Monsters (coven spell lists, aunties, grandmothers, alternative coven members), and ends with useful combat tactics for each of the hags from the Monster Manual and Volo's Guide, as well as tactics for covens. Finally, Chapter 5 presents five encounter groups (with sub-encounters) to give you quick story seeds and monster lists that you can put together in minutes to create a single encounter or to inspire a full campaign, and ends with three full-length adventures -- each with 3-5 encounters -- that showcase many of the new monsters, rules, magic items, and so on that appeared in earlier chapters. Each of these adventures comes with an encounter map meant to act as inspiration for hag lairs, and they include useful mechanical ideas for terrain effects and descriptive keywords listed directly on the map for added inspiration and easy customization! Designed by Tim Bannock. Written by Matt Butler, JVC Parry, Janek Sielicki, and Tim Bannock. Edited by Matthew Gravelyn and Tim Bannock. Cover Art by Elena Naylor. Cartography by Tim Bannock using Inkwell Ideas' Dungeonographer (Dungeonographer is copyright Inkwell Ideas). Layout & Graphic Elements by Elena Naylor with Tim Bannock. Interior Art by Arcana Games, Bruno Balixa, David Lewis Johnson, Dean Spencer, Earl Geier, Filip Gutowski, Jacob E. Blackmon, Joyce Maureira, Petr Kratochvil, Jayaraj Paul, Brian Brinlee, and Wizards of the Coast.

Weave of the Dread Mythal is a 1st-6th level Dungeons and Dragons 5e campaign that takes players on a journey of peril and intrigue across the Evermoor. Part story driven campaign, part sandbox, this adventure will give you tools to make the Evermoors come to life and a brutal and unique campaign to run within it. Your players will face the ire of hostile factions and their conflicting desires, the excitement and danger of ancient Netherese ruins and artifacts, and inevitably, the undead army of the Weaver, a wicked necromancer obsessed with becoming the new demi-god of undeath. This campaign also includes separate, full-size battlemaps that are made for use with Roll20 and other VTTs.

From the lead designer of Dragon Age Origins, in partnership with the creators of Odyssey of the Dragonlords, comes Raiders of the Serpent Sea! Take to the seas of Grimnir and battle against the sinister forces of a forgotten past in an epic campaign for the 5th Edition of the world’s greatest roleplaying game! Guide 4-6 players through tumultuous waters as they become heroes across a campaign that will take them from 1st to 16th level. Raiders of the Serpent Sea is a blend of high fantasy and a darker world of grim seafaring raiders. Grimnir’s clans constantly fight to survive in this doomed world filled with ancient and fantastic creatures - giants, sea serpents, saber-toothed tigers, and the world-devouring Yoten. Nowhere is safe, danger and glory abound! The Raiders of the Serpent Sea Campaign Guide PDF includes almost 500 pages of epic adventure and supplemental material with full-color maps and illustrations that breathe life into the campaign world.

"Den of the Rotten Kings" is a wererat lair suitable for four 3rd-level characters. This adventure can be completed in one session.

Two common elements mixed together create deadly peril. The last dungeon that many heroes will ever see. This dungeon crawl was based on the original S1 Tomb of Horrors. This is not an adventure for neophyte adventurers. Many traps, puzzles, and monsters exist to kill the party. However, the treasure of the mud sorcerers may be too tempting to pass by! Pgs. 50-70

Your stalwart band treks through the trackless jungle seeking the Dragon's Maw Waterfall. At the base of the falls, behind a massive curtain of water, is rumored to be the cavern lair of a great wyrm. The local Xulmec tribesmen say the great dragon has not been seen in nearly 100 years, so perhaps its hoard lies unguarded and ready for plunder. But what role do the heroes play in a blind shaman's prophecy foretold a century ago?

The adventure text was written by a neural network (Talk to Transformer) and compiled by a human editor. It is surprisingly usable. The adventure is centered upon the dangerous and thoroughly weird Tomb of the Daughter, the burial place and temple of an ancient Goddess. Explore several rooms connected by teleport systems, fight strange creatures, and perhaps thwart a demon summoning.